The Jay-Be Benchmark Open-coil King mattress is equipped with cutting-edge, sustainable sleep technologies. This mattress provides the most effective pressure-relieving, adaptive support available due to its deep e-Spring core and two premium comfort layers. While the revolutionary Memory e-Fibre, an eco-friendly alternative to memory foam, offers pressure-relieving support all night long, the extraordinarily fine Micro e-Pocket springs adapt to even the smallest movements of your body.